Floribunda rose plant named &#39;KORcastrav&#39;

ABSTRACT

A new and distinct variety of rose with long lasting, novel deep red flowers, and attractive foliage with good disease resistance. It exhibits upright growth with abundant flowers. The new variety propagates well from cuttings and by grafting. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

CROSS REFERENCES AND FEDERAL R&D STATEMENT

There are no cross referenced or related applications. This variety wasdeveloped without the aid of any research grant.

LATIN NAME OF GENUS AND SPECIES

The botanical classification of the new rose plant is Rosa hybrida.

VARIETY DENOMINATION

The denomination of the new variety is ‘KORcastrav’.

BACKGROUND OF THE INVENTION

The new variety of rose plant of the present invention originated from acontrolled crossing in a breeding program of two distinct parents duringthe summer of 2000. The crossing was between an unnamed seedling andanother unnamed seedling.

The resulting seeds were planted during the following winter. Theresulting seedlings were evaluated and exhibited distinctive physicaland biological characteristics. The new rose plant was selected as asingle plant from the seedling beds due to its superior characteristicsand asexually propagated for further evaluation. This new anddistinctive rose variety is named ‘KORcastrav’.

SUMMARY OF THE INVENTION

The new rose plant may be distinguished from its seed parent, an unnamedseedling, by the following combination of characteristics:

-   -   1. The common flower color of ‘KORcastrav’ is deep red. The        common flower color of the unnamed seedling is red-orange.    -   2. The growth habit of ‘KORcastrav’ is erect. The unnamed        seedling has an arching growth habit.

The new rose plant may be distinguished from its pollen parent, anunnamed seedling, by the following combination of characteristics:

-   -   1. The average height of ‘KORcastrav’ is 60 cm. The average        height of the unnamed seedling is 120 cm.    -   2. ‘KORcastrav’ blooms in rich clusters of 5-7. The unnamed        seedling blooms singly.

The objective of the hybridization was to create a new and distinct roseplant with unique qualities, such as:

-   -   1. Uniform growth and flowering;    -   2. Abundant attractive, recurrent flowers;    -   3. Attractive and abundant foliage; and    -   3. Resistance to diseases encountered in landscapes and gardens.

This combination of qualities is not present in prior rose cultivarsknown to the inventor. These objectives have been substantially achievedand in that distinguish ‘KORcastrav’ from all other varieties of whichwe are aware.

As part of a rose development program, Tim-Hermann Kordes germinatedseeds from the aforementioned hybridization and conducted evaluationsand observations on the resulting seedlings in a controlled environmentin Offenseth-Sparrieshoop, Germany. The resulting seedlings exhibiteddistinctive physical and biological characteristics. The new rose plant‘KORcastrav’ was selected in May, 2001 from the seedling beds to beasexually propagated for further evaluation. The first asexualpropagation of ‘KORcastrav’ was done by budding to seedling understocksin July, 2001 at the inventor's nursery in Offenseth-Sparrieshoop,Germany.

This initial and other subsequent propagations conducted in controlledenvironments demonstrate that ‘KORcastrav’ reproduces true to type insuccessive generations of asexual reproduction.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying color drawing shows as true as is reasonably possibleto obtain in color photographs of this type, the typical characteristicsof the buds, flowers, leaves, and stems of ‘KORcastrav’.

DETAILED BOTANICAL DESCRIPTION

The following is a description of ‘KORcastrav’, as observed growing inOctober, 2010 in a nursery in Jackson County, Oreg. on plants of 5 yearsof age. Color references are made using The Royal Horticultural Society(London, England) Colour Chart, 2001 except where common terms of colorare used.

For a comparison, several physical characteristics of the rose variety‘KORsineo’, a rose variety from the same inventor described andillustrated in U.S. Plant Pat. No. 20,743 and issued on Feb. 9, 2010 arecompared to ‘KORcastrav’ in Chart 1.

CHART 1 Characteristic ‘KORcastrav’ ‘KORsineo’ Common flower color DeepRed Violet Red Diameter of Plant 60 cm 30 cm Flower diameter 60 mm 35 mm

-   Parents:    -   -   Seed parent.—an unnamed seedling.        -   Pollen parent.—an unnamed seedling.-   Classification:    -   -   Botanical classification.—Rosa hybrida, ‘KORcastrav’.        -   Commercial classification.—Floribunda rose.-   Flower and flower bud:-   Blooming habit: Recurrent.-   Flower bud:    -   -   Size.—Upon opening, 35 mm in length from base of receptacle            to end of bud and 25 mm diameter at its widest point.        -   Bud form.—Long. High centered.        -   Bud color.—As sepals first unfold, bud color is Red Group            45B. When ¼ open, the upper surface of petals is Red Group            45C, and the lower surface is Red Group 45B.        -   Sepals.—Size: Average 25 mm long×5 mm wide. Shape: Sepals            generally acuminate. Sepal apex is generally cirrose. Weak            foliaceous appendages on three of the five sepals. Base is            flat at union with receptacle. Quantity: Five. Margins:            Ciliated with fine hairs and stipitate glands. Surface            texture: Inner side: Covered in fine hairs. Outer surface:            Smooth, with limited number of stipitate glands present.            Color: Upper surface Yellow-Green Group 146C. Lower surface            Yellow-Green Group 144A.-   Receptacle:    -   -   Surface.—Smooth.        -   Color.—Yellow-Green Group 144A.        -   Shape.—Pear-shaped.        -   Size.—7 mm (h)×5 mm (w).-   Peduncle:    -   -   Surface.—Smooth, with a limited number of stipitate glands            present.        -   Length.—15-20 mm average length.        -   Diameter.—2 mm average diameter.        -   Color.—Yellow-Green Group 144A.        -   Strength.—Moderate.        -   Borne.—Multiply. 5-7 buds per flowering stem.-   Flower bloom:    -   -   Fragrance.—Light.        -   Duration.—On the plant 10 days. Long lasting. As a cut            flower, 5 to 7 days. Senesced petals drop away cleanly.        -   Size.—Small flowered garden rose. When open, the average            flower diameter is 60 mm and the average flower height is 25            mm.        -   Form.—Shape of flower when viewed from the side: Upon            opening, upper part: Cupped. Upon opening, lower part: Flat.            Open flower, upper part: Flattened convex. Open flower,            lower part: Flat.-   Color:    -   -   Upon opening, petals.—Outermost petals: Outer Side: Red            Group 45A. Inner Side: Red Group 45B. Innermost petals:            Outer Side: Red Group 45B. Inner Side: Red Group 45B.        -   Upon opening, basal petal spots.—Basal petal spot, outermost            petals: Outer Side: Yellow-White Group 158D. Inner Side:            Yellow Group 1D. Basal petal spot, innermost petals: Outer            Side: Yellow-White Group 158D. Inner Side: Yellow Group 1D.        -   After opening, petals.—Outermost petals: Outer Side: Red            Group 53C. Inner Side: Red Group 46B. Innermost petals:            Outer Side: Red Group 46B. Inner Side: Red Group 45A.        -   After opening, basal petal spots.—Basal petal spot,            outermost petals: Outer Side: Yellow-White Group 158D. Inner            Side: Yellow Group 1. Basal petal spot, innermost petals:            Outer Side: Yellow-White Group 158D. Inner Side: Yellow            Group 1D. Variegations: None.-   General Tonality: On open flower Red Group 45A. No change in the    general tonality at the end of the 8^(th) day. Afterwards, general    tonality is Red Group 45C.-   Petals:    -   -   Petal count.—Approximately 10-12 petals under normal            conditions.        -   Petal reflex.—Petals reflex slightly.        -   Petal edge.—Entire.        -   Petal shape.—Deltoid. Apex shape is round. Shape of base is            acute.        -   Petal size.—35 mm long; 30 mm wide.        -   Thickness.—Thin.        -   Petal arrangement.—Generally in a regular pattern with            overlapping edges.-   Petaloids: Present.    -   -   Petaloid count.—Average of 4-7 per flower.        -   Petaloid edge.—Entire.        -   Petaloid texture.—Smooth.        -   Petaloid shape.—Linear to elliptic.        -   Petaloid size.—Petaloids are 20 mm long and 15 mm wide.        -   Petaloid color.—Color of inner side is Red Group 45A. Color            of outer side is Red Group 45A.-   Reproductive organs:    -   -   Pistils.—Approximately 20 present. Stigmas: Location:            Superior in position to anthers. Color: Yellow Group 11B.            Styles: Length: 9 mm long. Color: Yellow Group 11C.        -   Stamens.—Approximately 35-45 on average and regularly            arranged. Anthers: Size: 2 mm long. Color: Gray-Orange Group            175C. Pollen: Generally present. Color: Yellow-Orange Group            20A. Filaments: Color: Yellow Group 13B. Length: 7 mm.-   The plant:    -   -   Plant growth.—Moderate vigor. Erect habit. When grown as a            budded nursery plant the average plant height is 60 cm and            the average plant width is 65 cm.        -   Stems.—Stem color: Young wood: Yellow-Green Group 144A.            Older wood: Yellow-Green Group 144A. Stem surface: Young            wood: Smooth. Older wood: Smooth.        -   Prickles.—Present. Incidence: 5-7 per 10 cm of juvenile            stem. 0-3 per 10 cm of mature stem. Size: Average length:            8 mm. Color: Immature prickles: Gray-Red Group 182B. Mature            prickles: Gray-Brown Group 199C with intonations of Gray-Red            Group 182B. Senescing to Gray-Brown Group 199C. Shape: Flat            to flattened-concave. Anthocyanin: Color Gray-Red Group            182B.        -   Leaves and leaflets.—Normally 5 leaflets on normal leaves in            middle of the stem. Venation pattern: Pyramidal net pattern.            Leaf size: 100 mm (l)×85 mm (w). Quantity: Abundant.            Texture: Upper side of leaflet: Semi glossy. Smooth. Under            side of leaflet: Matte. Smooth. Color, mature foliage: Upper            Leaf Surface: Green Group 137A. Lower Leaf Surface: Green            Group 138B. Color, juvenile foliage: Upper Leaf Surface:            Yellow-Green Group 146A. Lower Leaf Surface: Yellow-Green            Group 146B. Anthocyanin intonation: Present. Location:            Intonations present on juvenile leaf margins and developing            leaves.        -   Stipules.—Size: 25 mm long. 9 mm between the tips of the            stipule. Main body of stipule 3-4 mm in width. Shape:            Longitudinally flanged. Stipule color: Upper side: Green            Group 137A. Lower side: Yellow-Green Group 144A. Presence of            stipitate glands: Present on margins. Margins: Ciliate along            the upper margins.        -   Petiole.—Length: 20 mm. Diameter: 2 mm. Petiole color:            Yellow Group 144A. Underneath: Smooth. Stipitate glands:            Limited numbers of stipitate glands on margins.        -   Petiole rachis.—Length: 40 mm. Diameter: 2 mm. Color:            Yellow-Green Group 144A. Margins: Entire, with occasional            stipitate glands. Prickles: Lacking. Stipitate glands:            Limited numbers of stipitate glands on margins.        -   Leaflets.—Size: Average size of the terminal leaflet is 45            mm (l)×35 mm (w). Shape: Broadly ovate. Base: Broadly ovate.            Apex: Ovate. Margins: Compound serrated. Texture: Leathery.-   Hips/seed formation: Observed. Size: 8 mm (w)×8 mm (h). Color:    Yellow-Green Group 144C.-   Winter hardiness: To date, the variety has been grown successfully    in Zone 5.-   Disease resistance: Above average resistance to Powdery mildew    (Sphaerotheca pannosa) and blackspot (Diplocarpon rosae) diseases    under normal growing conditions.

1. A new and distinct variety of rose plant, as described andillustrated herein.